diff --git a/core/wiki/macros/sidebar-resizer.tid b/core/wiki/macros/sidebar-resizer.tid
index 8958d5aea..73f2f0109 100644
--- a/core/wiki/macros/sidebar-resizer.tid
+++ b/core/wiki/macros/sidebar-resizer.tid
@@ -47,7 +47,7 @@ title: $:/core/procedures/sidebar-resizer
 :else[<qualify>addsuffix<get.sidebar.width.tiddler>addsuffix<currentTiddler>sha256[]addprefix[$:/state/resizing-]]
 \end
 
-\procedure set_theme_throttling(metric,tiddler)
+\procedure set-theme-throttling(metric,tiddler)
 <%if [<set.throttling>match[yes]] %>
 	<$set name="metricsTiddler" value={{{ [<tiddler>getvariable[]!is[blank]] :else[function[get.theme],<metric>] }}}>
 		<%if [<metricsTiddler>!has[throttle.refresh]] %>
@@ -339,17 +339,17 @@ title: $:/core/procedures/sidebar-resizer
 		widgetNodeWidth={{{ [<get.resizer.state>get[widget-node-width]] }}}
 		dragDiff=<<get.drag.diff>>>
 		<%if [<tv-set-storywidth-storyright>match[yes]] %>
-			<<set_theme_throttling storyright storyRightTiddler>>
-			<<set_theme_throttling tiddlerwidth tiddlerWidthTiddler>>
-			<<set_theme_throttling storywidth storyWidthTiddler>>
+			<<set-theme-throttling storyright storyRightTiddler>>
+			<<set-theme-throttling tiddlerwidth tiddlerWidthTiddler>>
+			<<set-theme-throttling storywidth storyWidthTiddler>>
 			<<set-storywidth-storyright-actions>>
 		<% endif %>
 		<%if [<tv-set-sidebarwidth>match[yes]] %>
-			<<set_theme_throttling sidebarwidth sidebarWidthTiddler>>
+			<<set-theme-throttling sidebarwidth sidebarWidthTiddler>>
 			<<set-sidebarwidth-actions>>
 		<% endif %>
 		<%if [<tv-set-centralised>match[yes]] %>
-			<<set_theme_throttling storywidth storyWidthTiddler>>
+			<<set-theme-throttling storywidth storyWidthTiddler>>
 			<<set-centralised-actions>>
 		<% endif %>
 	</$let>
@@ -358,7 +358,7 @@ title: $:/core/procedures/sidebar-resizer
 
 \function get.resizer.class() tc-sidebar-resizer [<get.resizer.state>is[tiddler]then[tc-resizer-active]] [<resizer.class>] [<resizer.class>is[blank]then<qualify>addsuffix<currentTiddler>sha256[]addprefix[tc-sidebar-resizer-identified-]] +[join[ ]]
 
-\function get.active.class(class) [<class>] [<eventCatcherClass>] [<get.resizer.state>is[tiddler]then[tc-resizer-active]] +[join[ ]]
+\function get.active.class(class) [<class>] [<resizer.class>match[tc-main-sidebar-resizer]] [<eventCatcherClass>] [<get.resizer.state>is[tiddler]then[tc-resizer-active]] +[join[ ]]
 
 \function get.sidebar-resizer.pointerdown.actions()
 [<get.resizer.state>match[$:/state/sidebar/resizing]then<sidebar-resizer-pointerdown-actions>]